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Thread: Valve covers

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    '86 Turbo justin260z's Avatar
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    Default Valve covers

    Which valve cover usually brings more money when restored and painted nicely. The regular nissan ohc one or the TURBO one.

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    My guess would be the Turbo because the others are more common. I see them (the regular one) all the time on my trips to the junkyard and people just seem to leave them there while most every time I see a turbo car, the valve cover is gone I actually have a Turbo valve cover on my 78 280Z though the car doesn't have a turbo. I also have an early 'Nissan 2400CC' valve cover among my parts. Those are getting harder to find. Haven't seen one of those for sale for a while. I ultimately plan to put that on my 810 though it's the incorrect valve cover for that car, it kind of works with the 2.4 liter L24E. I guess the rarest would be the JDM block letter NISSAN valve cover. Wish I could find one of those at a resonable price. I saw one at the junkyard years ago but didn't buy it because at that time I didn't realize that it was anything special.
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    The Nissan 2400 OHC cover.

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    '86 Turbo justin260z's Avatar
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    OOH OOH there is a NISSAN block valve cover on ebay RIGHT NOW for 180 dollars. Doesnt seem like a bad price AT ALL but im dead broke. Otherwise id buy it. Its buy it now for 180. Check it out. http://cgi.ebay.com/ebaymotors/datsu...spagenameZWDVW
    Last edited by justin260z; 12-25-2007 at 09:39 PM.

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    Quote Originally Posted by theianmonster View Post
    The Nissan 2400 OHC cover.
    My valve cover doesnt say 2400 on it. Only nissan ohc.

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    Quote Originally Posted by theianmonster View Post
    The Nissan 2400 OHC cover.
    That's what I meant. It's in a box under the workbench and I haven't looked at it for about a year.
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    Quote Originally Posted by justin260z View Post
    My valve cover doesnt say 2400 on it. Only nissan ohc.
    The one I and Ian mentioned does. It's the earliest one used on the 240Z in the US. Look at 26thZ's avitar. IIRC it's a picture of one.
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    Ive seen those before. Ive seen ones that say nissan 2000 on them too. I think those were used on the old Skyline engines.

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    Season's Greetings my valve cover collector friends!

    S30 variants included a 2.0 liter engine and you will find the "Nissan 2000" appropriate for them. Here in America, we got the 2.4 liter engine and early valve covers were noted with the "Nissan 2400 OHC". Later models of the 2.4 liter engine have the common "Nissan OHC" valve cover. I could be wrong, but I associate the "NISSAN" valve cover and the turbo valve cover with the S130 models.

    Now, conduct a search through the archives and you will find a mess of threads dealing with all the different valve covers that will fit on the Z. But to answer the initial question, I would say the TURBO valve cover would bring the most money however I would leave it unpainted.

    BTW, never sand blast a valve cover. The sand grit will get inside the baffels.

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    Thanks for the info 26th! The only reason I was going to paint it is because it looks pretty nasty. I think someone has painted it before me, and that paint is coming off. I know the Nissan OCH valve covers weren't painted from the factory, but were the TURBO valve covers painted black from the factory? I see a lot of them that have black paint chipping off. I have also seen some that are raw aluminum color, never been painted.

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    Quote Originally Posted by sblake01 View Post
    I also have an early 'Nissan 2400CC' valve cover among my parts. Those are getting harder to find. Haven't seen one of those for sale for a while. I ultimately plan to put that on my 810 though it's the incorrect valve cover for that car, it kind of works with the 2.4 liter L24E.
    The evidence so far seems to show that for cars here in the US (and Canada), the "2400 OHC" cover was only used on manual transmission cars through sometime during 10/70 production. Some manual transmission 10/70 cars had the 2400 cover, others came with the later "Nissan OHC" cover. As near as I and others have been able to piece together, all automatics (which started in 9/70 or so) had the later cover.

    Like Stephen, even though it wouldn't be 'correct' for my (7/71) car, IF I were to dress up my engine compartment with a polished cover, I think the 2400 cover would be what I'd like to use. Since I have no plans to swap in an L28, it would be cool to have a valve cover that actually describes the engine.
    Last edited by Arne; 12-26-2007 at 11:09 AM.
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    Quote Originally Posted by justin260z View Post
    Thanks for the info 26th! The only reason I was going to paint it is because it looks pretty nasty. I think someone has painted it before me, and that paint is coming off. I know the Nissan OCH valve covers weren't painted from the factory, but were the TURBO valve covers painted black from the factory? I see a lot of them that have black paint chipping off. I have also seen some that are raw aluminum color, never been painted.
    Yes, the 81-83 Nissan Turbo valve cover was black from the factory, however, the letters and outlining rectangle were bare.

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    All things being equal in condition and finish, the TURBO cam cover seems to bring more than the OHC cam cover. I base that on eBay sales over the last several years. And of course the "2400" and JDM "NISSAN" bring the most as previously mentioned. I guess it's a direct function of 'availability'. The scarce ones bring more, and the OHC covers are the most common.
    Now, there is the issue of "paint" that you brought up. To what degree do you want to consider painting; the whole thing, or just some 'detailing'. Ones with a full paint job don't seem to bring very much. Let's face it, if you are buying one of these, you likely already have one on an L-Series engine. If you want it painted, you can do it yourself in the color that you want (not what someone else has chosen). There is always the issue and debate about getting paint to adhere well long-term on aluminum, too. If you want to score $$$, "polish" it. Do a nice polish job and you'll see probably between $100.00 ~ $200.00 for a simple "OHC" cover, depending upon who is in the mood to buy at the time that you offer it. It's work, but if you've got the time, well worth the effort. Personally, I think well polished aluminum has a better appearance than chrome plate.... (not wanting to argue that, it's my opinion).
    I'll attach a picture I snapped last fall of some of the cam covers lurking in my garage. The one on the engine was bead media blasted, detailed with high-temp black and high-temp clear coated overall. On top, from left to right: an OHC polished and detailed with Nissan orange and black (final polishing still needs to be done), an OHC literally out-of-the-box never mounted NOS, a '2400' that has seen use and is waiting for me to decide what to do with it, and an OHC from a U-pull-it yard that had been painted then power washed (was originally gold color but nasty other stuff on top of that). The value in that bunch IMHO lies with the polished one and the "2400" one. The other OHC covers will get polished as time allows (I need to retire to get some of this stuff done).
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    Default 2400 OHC or big NISSAN

    My 12/70 240Z - 4 speed with e88 head came with a 2400 OHC valve cover. However, it was in the hatch area and not on the non-numbers-matching engine. I probably just lucked out, it will work fine on my non-numbers-matching (L28 F54 bored w/ flat top pistons) engine for my 7/70 240Z. However, of late I've been eying the couple of Big NISSAN JDM valve covers on eBay. They've been hovering in the $200 range - one with a whitish looking powder coat (really not my style) and the other with a black chrome/gunmetal badly done paint job (described as such by the seller and illustrated in the photos). IMHO I still think $180-$199 is too much money. Might be tempted into trading my (sorta polished) 2400 OHC for an unpainted Big NISSAN one in good shape, but I bounce back and forth depending on the day. I'd think the 2400 OHC would be rarer, but maybe not since we didn't get the NISSAN one at all. They both seem to appear on eBay at about the same frequency.
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    My 02/70 as the Nissan 2400 OHC cover, but it's painted black. However, the square and "Nissan 2400 OHC" are not. I'm assuming from what I've read that this is not stock, correct?
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    Quote Originally Posted by JonnyRock View Post
    My 02/70 as the Nissan 2400 OHC cover, but it's painted black. However, the square and "Nissan 2400 OHC" are not. I'm assuming from what I've read that this is not stock, correct?
    The valve cover is the correct early one (Nissan 2400 OHC) for your car, but shouldn't be painted at all, just unpolished aluminum finish.

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    Well, my 2400 OHC valve cover is for sale, make me an offer.

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    How about this one?
    For a LD28 block, looks a little long to me but will it fit on other s30 heads?


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    In a word, no.
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    How about a matching oil filler cap?
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    Former frequent poster sblake01's Avatar
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    I don't know. I think that' actually is the cap that goes on the LD28 valve cover.
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    Quote Originally Posted by WingZr0 View Post
    How about this one?
    For a LD28 block, looks a little long to me but will it fit on other s30 heads?


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    And the front of it looks a little wide.

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    I think the front looks wide because the body is so narrow.
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    Quote Originally Posted by theianmonster View Post
    Well, my 2400 OHC valve cover is for sale, make me an offer.

    Most likely the one he got from me.
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    Default JDM Nissan cover

    The so called JDM Nissan cover is not JDM.

    It was used on the 280zx in Australia. I've seen it on many L28's some with N42 head some with P90.

    I'm not in Australia at the moment, I'm actually in Ireland, where unfortunately there are NO Zeds. However when I get back home I'd be happy to go junkyard shopping for these "rare" valve covers for you guys.

    I sent one already to a guy in the states, it cost about $80 AU at the time.

    There is two different NISSAN covers though. One with smaller block lettering and one with larger. The larger one is harder to find. I have one for my own L31 build, but will keep an eye out for more.

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    My 04/70 has the NISSAN 2400 OHC cover/E31 head and my 10/70 and my later 240s annd 260 have the NISSAN OHC cover/E88 head. My 2 cents.
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    Default 2400-OHC Cam Cover - Gold Letters?

    Among my cam covers I have an early "2400-OHC". I took a close look at it the other day and noticed that the lettering had at one time been a 'gold' color (as there was some gold paint remaining). Was this gold lettering original to the cam cover or was it added by a previous owner. I'll post a picture below so you can see what I'm talking about. Has anyone else noticed the gold letters? I could swear that I've seen a picture somewhere of what was supposed to be an original 2400 cover with the gold lettering, but for the life of me I can't locate it now. This is of interest to me because I've decided to 'refresh' the cover. I'll post some pictures of the "after" results soon.

    Here's the 'before' shots (note the lettering color):

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    Quote Originally Posted by DeesZ View Post
    Was this gold lettering original to the cam cover or was it added by a previous owner.
    Definitely not original.

    -Mike

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    Gold lettering from a previous owner.
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    Thanks, guys.
    So, I am assuming the original finish simply was cast aluminum with no polished surfaces (such as letters/numbers) or any paint?
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    A Friday evening with no sporting events or homework with my boy left me with a bit of free time.... Here's the finished product of the refreshed "NISSAN 2400 OHC" cam cover. I elected to go with the gold lettering to add some accent.
    (The last picture is in natural evening sunlight casting long shadows.) Your comments or suggestions are welcome.

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